Unlock instant, AI-driven research and patent intelligence for your innovation.

Stable foam system based on nano particles and Gemini surface active agents and preparation method thereof

A surfactant and nanoparticle technology, used in chemical instruments and methods, drilling compositions, etc., can solve problems such as increased cost and poor temperature resistance, and achieve increased stability, strong temperature resistance, and increased viscosity. elastic effect

Inactive Publication Date: 2015-07-15
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
View PDF3 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nano-silica particles used need to be modified in advance, which increases the cost and has poor temperature resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stable foam system based on nano particles and Gemini surface active agents and preparation method thereof
  • Stable foam system based on nano particles and Gemini surface active agents and preparation method thereof
  • Stable foam system based on nano particles and Gemini surface active agents and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A kind of preparation method based on the stable foam system of nano silicon dioxide particle and Gemini surfactant, comprises the following steps:

[0050] 1) Preparation of nano-silica particles

[0051] Add 5mL of ammonia water to 100mL of absolute ethanol, and stir in the Erlenmeyer flask at room temperature for 10min;

[0052] Add 3mL tetraethyl orthosilicate (TEOS) into the mixed solution of ammonia water and absolute ethanol, stir continuously at 60°C for more than 12h, separate and purify to obtain the nano-silica particles with a size of 20nm;

[0053] 20nm nano silicon dioxide is dispersed in water with a stirrer (concentration is 1.0wt%);

[0054] 2) Preparation of Gemini surfactant

[0055] Put 5.2g of tetramethylethylenediamine, 32g of 1-bromododecane, and 250mL of absolute ethanol in a 1000mL three-neck distillation flask, connect the condenser tube and the electromagnetic stirrer in sequence, and then slowly raise the temperature of the reaction device ...

Embodiment 2

[0060] A method for preparing a stable foam system based on nano silicon dioxide particles and Gemini surfactants, should comprise the following steps:

[0061] 1) Preparation of nano-silica particles

[0062] Add 2.5mL of n-butylamine to 47.5mL of absolute ethanol, and stir in the Erlenmeyer flask at room temperature for 10min;

[0063] Add 1.5mL tetraethyl orthosilicate (TEOS) and 2.5mL deionized water into the mixed solution of n-butylamine and absolute ethanol, stir continuously at 25°C for more than 12h, separate and purify to obtain the nanometer with a size of 80nm Silica particles;

[0064] 80nm nano silicon dioxide is dispersed in water with a stirrer (concentration is 2.0wt%);

[0065] 2) Preparation of Gemini surfactant

[0066] Put 5.76g of tetramethylethylenediamine, 37.5g of 1-bromotetradecane, and 250mL of absolute ethanol in a 1000mL three-neck distillation flask, connect the condenser tube and electromagnetic stirrer in sequence, and then slowly raise the t...

Embodiment 3

[0071] A method for preparing a stable foam system based on nano silicon dioxide particles and Gemini surfactants, should comprise the following steps:

[0072] 1) Preparation of nano-silica particles

[0073] Add 5mL of n-propylamine to 95mL of absolute ethanol, and stir in the Erlenmeyer flask at room temperature for 10min;

[0074] Add 3mL tetraethyl orthosilicate (TEOS) and 5mL deionized water into the mixed solution of n-propylamine and absolute ethanol, stir continuously at 36°C for more than 12h, separate and purify to obtain the nano-silica with a size of 280nm particles;

[0075] The 280nm nano silicon dioxide is dispersed in water with a stirrer (concentration is 1.5wt%);

[0076] 2) Preparation of Gemini surfactant

[0077] Put 6g of tetramethylethylenediamine, 37g of 1-bromohexadecane, and 250mL of absolute ethanol in a 1000mL three-neck distillation flask, connect the condenser tube and electromagnetic stirrer in sequence, and then slowly raise the temperature ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Sizeaaaaaaaaaa
Sizeaaaaaaaaaa
Sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a stable foam system based on nano particles and Gemini surface active agents and a preparation method thereof. The stable foam system based on the nano particles and the Gemini surface active agents is characterized in that the foam system is formed by compounding, by weight, the raw materials of 0.05-2 parts of the Gemini surface active agents with different carbon chain lengths, 0.5-2 parts of nanosilicon dioxide particles and 100 parts of water; the Gemini surface active agents with different carbon chain lengths are CH<3>-(CH<2>)nN+-CH<2>-CH<2>-+N(CH<2>)n-CH<3>.2Br, 11<=n<=15, and n is a positive integer; the partical size of the nanosilicon dioxide particles ranges from 20 nm to 280 nm. The obtained stable foam system can exist for a long time at the temperature of 70 DEG C and 90 DEG C, and can exist about one mouth at normal temperature. Through interaction of nanosilicon dioxide and the Gemini surface active agents, the surface property of the nano particles is changed, such as the hydrophobic property, and therefore the adsorption capacity of the nano particles on a bubble liquid film is improved, and the stability of foam is improved.

Description

technical field [0001] The invention relates to the technical field of oil and gas field development and recovery engineering. More specifically, it relates to a stable foam system based on nanoparticles and Gemini surfactants and a preparation method thereof. Background technique [0002] As an EOR technology, foam flooding can control the mobility of the displacement medium in the formation, reduce the mobility ratio of the displacement medium to the displaced phase, thereby improving the sweep efficiency and oil displacement efficiency. However, as a thermodynamically unstable dispersion system, foam has a great impact on the application of foam, not only in the petrochemical field, but also in cosmetics, food and other industrial fields. Especially at high temperatures, the stability of the foam will be greatly reduced. [0003] Nanoparticles can flow well in the formation. In addition, nanoparticles can change the interface properties between the fluid and the formati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09K8/58
CPCC09K8/594C09K2208/10
Inventor 路遥厉江华武立斌
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI